Duplex eyelet-machine



` I:A I.. HARMGN. 'DUPLEX EYELET MACHINE.

APPLICATION FILED IUNEIZ, 1916.

F. L. HARMON.

v DUPLEX EYELET MACHINE.

l APPLICATION FILED JUNEJzilQis. Lviggyr v Patented May 3L, 31921.

2 s'HEETs-sHEVET 2.

TAT

FRANK L. HARMON, 0F BEVERLY, MASSACHUSETTS, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY, 0F ELIZABETH, NEW JERSEY, A CORPORATION 0F NEW JERSEY.

DUPLEX EYELET-IVIACHINE.

retener.

Application led June 12, 1916.

To all whom t may concern Be it known that I, F RANK L. HAnMoN, of Beverly, in the county of Essex and State of Massachusetts, have invented an Improvement in Duplex Eyelet-Machines, of which the following is a specication, reference heing had to the accompanying drawings.

rllhis invention relates to machines for set.- ting eyelets, lacing hooks and other tasteners in boots, shoes, corsets and other manufactures.

The invention as shown is embodied in a duplex eyeleting machine in which two eyelets may be simultaneously set in the edges of two pieces of material, hut is not limited to use with the specific form of machine shown.

A diiliculty in machines of the type mentioned is that, as the eyelets vary in size, there is a tendency ot the punches in machines now in use to carry the clenched eyelets back upon withdrawal, particularly when operating upon pliable material, thereby pulling up the material and allowing two eyelets to be set on top of those previously set or closely adjacent thereto, with resultant spoiling of the work. n

A further diliiculty in many machines is that the punch and set mechanisms are actuated in part by springs, causing variation in the relative motions of the punch and set under dierent conditions such as high speed, lack of proper lubrication, clogging, &c.

An object of the invention is to provide a. three-jawed feeding device coperating with a three-jawed stationary work-clamp to prevent the punches from thus lifting the material.

Another object is to provide an improved form of feed mechanism. that is independent of the punch and set mechanisms.

A further object is to provide narrow means Jfor gripping the work at each side of and close to the eyeleting position to facilitate guiding of the material, particularly in corsetwork.

A' still further object is to provide an improved punch and set mechanism in which the punch and set are positively driven during their whole period of operation` with resulting uniformity of action under all conditions.

Referring to the drawings, Figure l is a side elevation of the machine. Fig. 2 is a Specification of Letters Patent.

Patented May 31, 1921, serial no. 103,056.

horizontal section on the line 2 2, of Fig. l. F ig. 3 is a vertical section through the upper punch and set mechanism. Fig. 4 is an enlarged view of the lower part ot' Fig. 3. Fig. 5 is a detail view on the line 5 5, of Fig. 2, showing the stationary duplex work-clamp enlarged.

The machine is formed with a frame l having a hollow base in which are mounted a driving pulley, stop motion devices and connections of well known form. A vertical shaft 2 is driven by the pulley and is mounted in bearings in the frame, and on this shaft are mounted a series of cams, to be later described, for actuating various parts of the machine. At the front of the machine is a recess in which the material to be eyeleted is disposed and acted upon by the punch and set mechanisms. Mounted on the upper end of shaft 2 is a cam-disk having cani grooves at 3 and 6 for imparting vertical movement to the cam-rolls 4 and 7, respectively.l Movable in the front part of the frame 1 overhanging the working recess is a vertically slidable tubular set-bar 8, which carries at one side a stud supporting the cam-roll 7, and has a horizontally bent portion at its lower end. A tubular set 10 is threaded into said horizontal portion and as shown is secured in adjusted position by a lock-nut. A punch-bar 5 is slidably mounted in the bar 8 and has at one side a supporting stud for the cam-roll 4, which stud extends through a slot in the har 8. A punch 9 is threaded into the lower end or" bar 5 and is secured by a lock-nut, said punch extending below the end of set 10. A spring 12 is connected at one end to the frame l and at the other end to a stud on punch-bar 5, the purpose of this spring being to take up any slight lostl motion between the cam-roll 4 and cam-groove 3.

Since two pieces of material are simultaneously acted upon by opposed upper and lower punch and set mechanisms, the upper one only has been described in detail. The lower one is identical in all its parts with the upper one and similar reference characters are applied in the drawing, the only diierence being that the lower one is inverted relatively to the upper.

Between the upper and lower punch and set mechanisms is disposed a. iixed aw carrying in alinement with the punches and sets opposed anvil sets 1l on its upper and lower ting surfaces. Above and below the fixed jaw and in proximity to one side of the anvil sets 11v are disposed spring-jaws 47, the two spring-jaws and the fixed one forming a work-clamp. The three jaws are secured to the frame 1 by a single screw, as best shown in Fig. 5.- rThe end of the fixed jaw is made wedge-shaped and the ends of the springjaws are bent away from the former,` in order that the work may be readily inserted on each side of the fixed jaw. At the other side of the anvil sets are disposed the gripping ends of three feed jaws 13, 16 and 17, the ends of the jaws 16 and 17 being provided with rubber or other elastic tips 16a, 17a, respectively, which allow the material to be lightly yet firmly held between the outer jaws 16 and 17 and the intermediate one 13. The jaw 13 is fixed on a rock-shaft 14 journaled at 15 in extensions of the frame 1, the jaws 16 and 17 being disposed above and below jaw 13 and pivotally secured to the rock-shaft by screws 18 and 19. A spring 30 secured to jaws 16 and 17 tends to move them toward jaw 13, to thereby grip materials placed between them.

Means are provided to swing aws 13, 16 and 17, to thereby feed work held between them. A spring 20 is secured to a bar fastened by screws 21 and 22 to an extension of frame 1, the lower end of the spring fitinto a slot in an arm extending from the rock-shaft 14. rI`he spring 2O tends to rotate shaft 14 in an anti-clockwise direction, thereby swinging the feed-j aws toward shaft 2. The feed-jaws are supported and guided on one side by a plate extending from the rock-shaft 14 and on the other side by a bar 31 secured to said plate by screws 32 and 33. The jaw 17 due to the pressure exerted by spring 20, presses against a pin 23 carried by a lever 24 pivoted on a screw 35, the lever 24 in turn pressing against a feed-cam 25 on the shaft 2. At the end of a feed movement the jaws 16, 17 are moved to free the work by a releasingdevice 26 pivoted at 27 to the frame 1, said device comprising an arm at one side bearing against an opening cam 46 on shaft 2, and two projecting prongs 28 on the other side, each adapted to engage an inclined cam-surface 29 on respective jaws 16 and 17. The arm of the device 26 is held against the cam 46 by a spring 48 attached at one end to the frame 1 and at the other end to a stud projecting from the releasing device. Upon rotation of cam 46 the prongs 28 are forced against the. cam-surfaces on jaws 16 and 17 thereby opening said jaws against the tension of spring 30.

, Means are provided for changing the length ofl feed-stroke, and the consequent distance between eyelets, as follows: The screw 35 on which the feed-lever 24 is pivoted is carried by an adjustable feed controlling bar 34 slidable in a guideway on the frame 1,

the bar 34 being held at one end in said guideway by a cap-bar 36 secured to the frame by screws 37, and at the other end by an angle-piece 38 secured to the frame. A spring 43 is secured at one end to a lug on bar 34 and at the other end to the frame 1, said spring tending to move bar 34 toward the right and into engagement with the end of a feed controlling screw 39 threaded into the part 38. By moving the screw 39 the position of bar 34 is varied, thereby varying the fulcrum point 35 of feed lever 24 with a resulting change in the distance the feedjaws 13, 16 and 17 are swung. The screw 39 is held in adjusted position by a lock-nut 45. Means are also provided to increase the spacing of the eyelets atany time during the operation of. the machine. A flexible cable 40 is connected to the end of bar 34 opposite the controlling screw 39 and passes over a guide pulley 41 to a treadle (not shown), whereby the operator can at any time move bar 34 to the left to thereby increase the feed movement of the feed-jaws. In order to variably limit this movement an adjustable stop-screw 42 is located on the frame in position to abut against a stop lug 34a on bar 34. Any desired indicating means may be used to aid in making the various adjustments.

The mode of operation of the machine is as follows--The pieces of material arev inserted between the respective spring clamping-jaws 47 and the intermediate or fixed j aw, the ends of the material being advanced far enough to lie between the feed-j aws 13, 16 and 17 which are normally open. Upon starting the machine the cam 46 allows spring 48 to withdraw prongs 28 from the inclined surfaces 29, the spring 30 closes the feed-.jaws 16 and 17, and the work is then held at each side of the anvilV sets 11 and very close thereto. The rotation of shaft 2 causes the cam-grooves 3 and 6 to act upon the respective cam-rolls 4 and 7 to force the punches 9 and .sets 10 toward the material until the punches 9 have each taken an eyelet from raceways (not shown) and have passed through the material into contact with the anvils of anvil sets 11. Thereupon dwells in cam-grooves 3 hold the punches 9 in position while cam-grooves 6 continue to move the sets'lO, the latter telescoping over the punches 9 to clench the eyelets through the holes in the material and against the grooves or clenching surfaces of the anvil sets 11. Then the cam-grooves 3 and 6 actuate the punches 9 and sets 10, in the reverse direction to release the eyelets. rlhe material being closely gripped at one side of the eyelets by the clamping jaws and also closely gripped on the opposite side at this time by the feed-j aws 13, 16 and 17 any tendency of an eyelet to cling to a punch and be lifted is thereby prevented. As soon as the eyelets have been released the feed- Leases? cam 25 swings feed-lever 24 on its pivot 35, thereby forcing pin 23 against jaw 17 and swinging the entire feed jaw mechanism about the rock-shaft 14 against the resistance of spring 20 to feed the material, the length of this feed depending upon the adjustment of the feed controlling bar 34, as previously explained. At the end of the feed movement the opening cam 46 actuates the releasing device 26 against the tensionof spring 48 and moves the prongs 28 on the cam-surfaces 29 of jaws 16 and 17, thereby spreading said jaws and releasing them from the material. After this the feed-cam 25 allows springs 20 tok return the whole feed jaw mechanism to normal position with the open gripping ends of the feed aws at one side of and adjacent the anvil sets 11, and

the machine is automatically stopped. Upon 20'l again starting the machine the above cycle of operations is repeated.

I claim- 1. An eyeleting machine, comprising two punch-and-set mechanisms, each mechanism comprising a punch and set telescopically combined, and mounted to act upon two materials from opposite directions, a duplex feed device mounted and connected for vibration adjacent one side of the punches and sets of said mechanisms, and means for holding the materials with a capability of forward feeding by the action ofsaid duplex feed device.

2. An eyeleting machine, comprising two punch-and-set mechanisms, each mechanism comprising a punch and set telescopically combined, and mounted to act upon two materials from opposite directions, and a dupleX feed device mounted and connected for relatively rapid vibration closely adjacent one side of the punches and sets of said mechanisms, for feeding the materials thereto and spacing the eyelets.

3. An eyeleting machine, comprising two punch-and-set mechanisms, each mechanism comprising a punch and set telescopically combined, and mounted in substantial alinemen to act upon two material pieces from opposite directions, and a duplex feed device mounted and *connected vfor relatively rapid vibration closely adjacent one side of the punches and sets of said punch-and-set mechanisms.

4. An eyeleting machine, comprising two punch-and-set mechanisms, each mechanism comprising a punch and set telescopically combined, and mounted in substantial alinement to act upon two material pieces from opposite directions, a dupleX feed device mounted and connected for relatively rapid vibration closely adjacent one side of the punches and sets of said punch-and-set mechanisms, and a duplex work clamp mounted adjacent the opposite side o'f the punches and sets of said punch-and-set mechanisms to hold the material pieces with a capability of forward feeding by said dupleX feed device.

5. An eyeleting machine, comprising two punch-and-set mechanisms, each mechanism comprising a punch and set telescopically combined, and mounted to operate on two materials from opposite directions, and a duplex feed device consisting in an intermediate jaw and two outer jaws oppositely movable with respect thereto, and means for vibrating said jaws in a range relatively in an intermediate jaw and movable jaws.

cooperative with opposite sides thereof, said movable jaws having means for periodically opening and closing them in the cycle of their vibration toward and from said eyeleting mechanisms.

7. An eyeleting machine, comprising a plurality of oppositely mounted punch-andset mechanisms for operating simultaneously on two pieces of material, and a. duplex feed device mounted for vibration toward and from said mechanisms and closely adjacent the punches and sets thereof, said device consisting in an intermediate jaw and two aws swingingly mounted and having means tending to draw them against opposite sides of said intermediate jaw to clamp the materials, and nreans for positively disengaging said jaws at the end of each feed movement as a part of the vibrating feed cycle.

8. An eyeleting machine, comprising a plurality of punch-and-set mechanisms mounted to operate simultaneously from opposite sides on two materials, a duplex feed device mounted and connected for vibration adjacent the punches and sets of said mechanisms at one side thereof, said device consisting in an intermediate jaw and two jaws movably mounted to coperate with opposite sides of the intermediate jaw, an operating shaft equipped with a cam and connections for vibrating said jaws laterally with respect to said punch-and-set mechanisms for feeding the materials, and a second cam on said shaft having connections for periodically closing and opening said jaws.

9. An eyeleting machine comprising a plurality of punch-and-set mechanisms mounted to operate simultaneously from io o opposite sides' on two' materials, a duplex feed device mounted and connected for vibration adjacent the punches and sets of said mechanisms at one side thereof, an operating shaft having a cam Xed thereon, a, connection from said feed device to be actuated by said cam, and means for adjusting said connection to vary the throw of Such feed device at will.

. 10. In an eyeleting machine, eyeleting mechanisms comprising a plurality of telescopioally combined punches and sets and mounted to operate simultaneously from opposite sides on two materials, a duplex feed device mounted and connected for vibration adjacent the punches and sets of said mechanisms at one side thereof, and a duplex work clamp mounted at the opposite side of said mechanisms, said clamp including oppositely acting yielding jaws adapted to engage and yieldingly clamp the respective materials.

l1. An eyeleting machine, comprising a telescopicallycombined punch and set, a slidably mounted har to which the punch is fixed, a second slidably mounted bar to which the set is iXed, and cams directly engaging said bars fory vibrating them positively and independently of each other.

12. In an eyelet machine, duplex punchand-set mechanisms each including a punch telescopic in a vibratory set, and mounted to act upon a material, a stationary lpunch block and set anvil, a material-feeding device comprising feed jaws, mounted and connected for vibration adjacent said punch block and set anvil, and means for holding the materials with a capability of forward feeding by action of said feed device and for supporting the materials while vthe punches release the eyelet after they are clenched.

13. In an eyelet machine, duplex punchand-set mechanisms each comprising Aa punch telescopic in a vibratory set, and mounted to act upon a material, a stationary punch block and set anvil, a support'at one side of said stationary punch and set device to h old the materials from being lifted by the punches while they release the eyelets, and a material feeding device comprising vibratory feed jaws mounted and connected for vibration adjacent said punch and set device to feed material after the eyelets are released.

14. In a duplex eyeleting machine, `opposed punch and set mechanisms, duplex yielding work-clamps disposed at one side of and close to the eyeleting points, and work feeding means disposed at the opposite side ofthe eyeletingl points and comprising a movable intermediate jaw and clamping jaws movable therewith and also relatively thereto. e Y

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. Y

' FRANK L IIARMON.

Witnesses: Y

SARAH WHITE,

SAMUEL H. Stro-NE. 

